Wiktionary
interj. (context idiomatic English) Too bad (for you); the outcome one desires is not likely to evolve, due to active intervention by the speaker. n. (tough cookie English)
Wikipedia
Tough Cookies is a comedy television series that aired on CBS in 1986; six episodes were broadcast.
This series premiered on the same date (1986-03-05), and was also cancelled on the same date (1986-04-23), as another CBS comedy series, Fast Times.
Usage examples of "tough cookies".
You 31337 hackers who are feeling insulted by reading this because it was too easy, tough cookies.
Poletto, on the other hand, liked to keep in touch with the streets, and the tough cookies who hung around the beaches.
Even their field-agents - and there are some pretty tough cookies among them - are terrified and won't go near the area.
Cut out the compliments, Ironsides he advised himself these are two tough cookies and they are not impressed.